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   "source": [
    "# 线性代数知识点"
   ]
  },
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   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### 1、代数是数的抽象表示\n",
    "    一维是线\n",
    "    二维是面，线性无关的两个一维向量可以描述二维平面\n",
    "    \n",
    "    \n",
    "#### 2、向量空间\n",
    "    向量空间V对加法和数乘封闭\n",
    "    矩阵可以描述向量空间\n",
    "    \n",
    "#### 3、子空间\n",
    "    两个一维向量线性相关，那么无法描述二维平面，他们是二维平面的子空间\n",
    "    线性无关的列向量可以作为向量空间的基或者坐标"
   ]
  }
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